Sulfur well sealing method

Details Sulfur well sealing method Sulfur well sealing method

1977-12-21

1978-11-07

Purser, Ernest R.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Melted material recovered

166314, E21B 4328, E21C 4114

Patent

active

041242530

ABSTRACT:
A method is disclosed for sealing a sulfur well wherein the well is made to discharge only sulfur and air instead of mixtures of sulfur, water and air. The method is used in conjunction with the Frasch mining technique when starting a new well for the first time and when an active well has "blown". The method consists of shutting off the sulfur line and air line, "boosting" the well by sending down hot "superheated water" through the water line to raise the level of the sulfur pool by melting additional sulfur, slowly applying a pressurized gas to the top of the sulfur line and holding at an elevated pressure for a period of time and then slowly releasing the pressurized gas. The air line is then opened and pressurized, and a mixture of sulfur and air, devoid of water, exits through the sulfur line.

REFERENCES:
patent: 800127 (1905-09-01), Frasch
patent: 2749991 (1956-06-01), Spearow
patent: 3630573 (1971-12-01), Goddin et al.

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